fix: complete localized accessible UI audit

Localize dynamic renderer and shell text in English and German, replace native prompts with safe styled dialogs, align empty and dirty states, restore compact responsive information, and add keyboard support for queue, account, menu, and sorting interactions. Version the verified patch as 2.1.6.

main.js

@@ -1402,10 +1402,10 @@ function createWindow() {
       try {
         const choice = dialog.showMessageBoxSync(mainWindow, {
           type: 'error',
-          title: 'Renderer abgestürzt',
-          message: `Der Renderer-Prozess ist abgestürzt (${details.reason}).`,
-          detail: 'Bitte Diagnose-Paket exportieren und einsenden. Klick "Neu laden" um die UI wiederherzustellen — laufende Uploads im Main-Process bleiben aktiv.',
-          buttons: ['Neu laden', 'Beenden'],
+          title: shellText('Renderer abgestürzt', 'Renderer crashed'),
+          message: shellText(`Der Renderer-Prozess ist abgestürzt (${details.reason}).`, `The renderer process crashed (${details.reason}).`),
+          detail: shellText('Bitte Diagnose-Paket exportieren und einsenden. Klick "Neu laden" um die UI wiederherzustellen — laufende Uploads im Main-Process bleiben aktiv.', 'Export and send a diagnostics package. Click "Reload" to restore the interface; uploads running in the main process remain active.'),
+          buttons: [shellText('Neu laden', 'Reload'), shellText('Beenden', 'Quit')],
           defaultId: 0,
           cancelId: 1
         });
@@ -1460,14 +1460,7 @@ function createTray() {
       } catch {}
     }
     tray = new Tray(icon || nativeImage.createEmpty());
-    tray.setToolTip('Multi-Hoster-Upload');
-
-    const contextMenu = Menu.buildFromTemplate([
-      { label: 'Öffnen', click: () => { if (mainWindow) { mainWindow.show(); mainWindow.focus(); } } },
-      { type: 'separator' },
-      { label: 'Beenden', click: () => { app.quit(); } }
-    ]);
-    tray.setContextMenu(contextMenu);
+    refreshTrayLanguage();
 
     tray.on('click', () => {
       if (mainWindow) { mainWindow.show(); mainWindow.focus(); }
@@ -1702,7 +1695,7 @@ ipcMain.handle('save-text-file', async (_event, defaultName, content, filters) =
     ? filters
     : [{ name: 'Textdatei', extensions: ['txt', 'csv', 'log'] }];
   const { canceled, filePath } = await dialog.showSaveDialog(mainWindow, {
-    title: 'Speichern unter',
+    title: shellText('Speichern unter', 'Save as'),
     defaultPath: safeName,
     filters: safeFilters
   });
@@ -1718,11 +1711,11 @@ ipcMain.handle('export-history', async (_event, format) => {
   const datePrefix = new Date().toISOString().slice(0, 10);
 
   const { canceled, filePath } = await dialog.showSaveDialog(mainWindow, {
-    title: 'Upload-Verlauf exportieren',
+    title: shellText('Upload-Verlauf exportieren', 'Export upload history'),
     defaultPath: `upload-history-${datePrefix}.${normalizedFormat}`,
     filters: normalizedFormat === 'json'
-      ? [{ name: 'JSON-Datei', extensions: ['json'] }]
-      : [{ name: 'CSV-Datei', extensions: ['csv'] }]
+      ? [{ name: shellText('JSON-Datei', 'JSON file'), extensions: ['json'] }]
+      : [{ name: shellText('CSV-Datei', 'CSV file'), extensions: ['csv'] }]
   });
 
   if (canceled || !filePath) return { ok: false, canceled: true };
@@ -1810,6 +1803,25 @@ function getUploadBrowseDirectory() {
   return app.getPath('downloads');
 }
 
+function getConfiguredLanguage() {
+  try { return configStore.load().globalSettings?.language === 'de' ? 'de' : 'en'; }
+  catch { return 'en'; }
+}
+
+function shellText(german, english) {
+  return getConfiguredLanguage() === 'de' ? german : english;
+}
+
+function refreshTrayLanguage() {
+  if (!tray || tray.isDestroyed()) return;
+  tray.setToolTip('Multi Hoster Uploader');
+  tray.setContextMenu(Menu.buildFromTemplate([
+    { label: shellText('Öffnen', 'Open'), click: () => { if (mainWindow) { mainWindow.show(); mainWindow.focus(); } } },
+    { type: 'separator' },
+    { label: shellText('Beenden', 'Quit'), click: () => { app.quit(); } }
+  ]));
+}
+
 async function rememberUploadBrowseDirectory(selectedPath, selectedDirectory = false) {
   if (!selectedPath) return;
   const directory = selectedDirectory ? selectedPath : path.dirname(selectedPath);
@@ -1821,8 +1833,8 @@ ipcMain.handle('select-files', async () => {
     defaultPath: getUploadBrowseDirectory(),
     properties: ['openFile', 'multiSelections'],
     filters: [
-      { name: 'Alle Dateien', extensions: ['*'] },
-      { name: 'Videos', extensions: ['mp4', 'mkv', 'avi', 'mov', 'wmv', 'flv', 'webm'] }
+      { name: shellText('Alle Dateien', 'All files'), extensions: ['*'] },
+      { name: shellText('Videos', 'Videos'), extensions: ['mp4', 'mkv', 'avi', 'mov', 'wmv', 'flv', 'webm'] }
     ]
   });
   if (result.canceled || !result.filePaths.length) return null;
@@ -2368,7 +2380,7 @@ ipcMain.handle('create-support-bundle', async () => {
     const defaultName = `multi-hoster-support-${stamp}.txt`;
     const desktop = (() => { try { return app.getPath('desktop'); } catch { return app.getPath('userData'); } })();
     const res = await dialog.showSaveDialog(mainWindow || undefined, {
-      title: 'Diagnose-Paket speichern',
+      title: shellText('Diagnose-Paket speichern', 'Save diagnostics package'),
       defaultPath: path.join(desktop, defaultName),
       filters: [{ name: 'Text', extensions: ['txt'] }]
     });
@@ -2516,11 +2528,11 @@ ipcMain.handle('export-backup', async () => {
   const _bd = new Date();
   const _bdate = `${String(_bd.getDate()).padStart(2, '0')}-${String(_bd.getMonth() + 1).padStart(2, '0')}-${_bd.getFullYear()}`;
   const { canceled, filePath } = await dialog.showSaveDialog(mainWindow, {
-    title: 'Backup exportieren',
+    title: shellText('Backup exportieren', 'Export backup'),
     defaultPath: `${_bdate}-multihoster-backup.mhu`,
     filters: [
-      { name: 'Multi-Hoster Backup (verschlüsselt)', extensions: ['mhu'] },
-      { name: 'Multi-Hoster Backup (Klartext JSON)', extensions: ['json'] }
+      { name: shellText('Multi-Hoster Backup (verschlüsselt)', 'Multi Hoster backup (encrypted)'), extensions: ['mhu'] },
+      { name: shellText('Multi-Hoster Backup (Klartext JSON)', 'Multi Hoster backup (plain JSON)'), extensions: ['json'] }
     ]
   });
   if (canceled || !filePath) return { ok: false, canceled: true };
@@ -2542,9 +2554,9 @@ ipcMain.handle('import-backup', async (_event, legacyPassword) => {
     buffer = readBackupFile(sourcePath);
   } else {
     const { canceled, filePaths } = await dialog.showOpenDialog(mainWindow, {
-      title: 'Backup importieren',
+      title: shellText('Backup importieren', 'Import backup'),
       filters: [
-        { name: 'Multi-Hoster Backup', extensions: ['mhu', 'json'] },
+        { name: 'Multi Hoster backup', extensions: ['mhu', 'json'] },
         { name: 'Verschlüsselt (.mhu)', extensions: ['mhu'] },
         { name: 'Klartext (.json)', extensions: ['json'] }
       ],
@@ -2642,10 +2654,10 @@ ipcMain.handle('read-own-upload-log', () => {
 
 ipcMain.handle('import-upload-log', async () => {
   const { canceled, filePaths } = await dialog.showOpenDialog(mainWindow, {
-    title: 'Upload-Log importieren',
+    title: shellText('Upload-Log importieren', 'Import upload log'),
     filters: [
-      { name: 'Log-Dateien', extensions: ['log', 'txt'] },
-      { name: 'Alle Dateien', extensions: ['*'] }
+      { name: shellText('Log-Dateien', 'Log files'), extensions: ['log', 'txt'] },
+      { name: shellText('Alle Dateien', 'All files'), extensions: ['*'] }
     ],
     properties: ['openFile']
   });
@@ -2807,6 +2819,7 @@ ipcMain.handle('save-global-settings', async (_event, globalSettings) => {
   if (uploadManager) {
     try { uploadManager.updateSettings(null, globalSettings); } catch (error) { debugLog(`global settings runtime update failed: ${error.message}`); }
   }
+  refreshTrayLanguage();
   return true;
 });